Music-leaf turner.



P. KUHN.

MUSIC LEAF TURNER.

APPLICATION FILED FBB.16.1909.

Peneneed Feb. 8,1910.

2 SHEETS-SHEET l.

@mounten P. KOHN. MUSIC LEAF TURNER.

APPLICATION rFILED PEB.16,1909.

948,51 1 K Patented Feb. 8, 1910.

2 SHEETS-SHEET Z.

'Mw' attenua UNITED STATES PATENT OFFICE.

PAUL KOHN, OF DETROIT, MICHIGAN.

MUSIC-LEAF TURNER.

T all whom it may concern:

Be it known that I, PAUL KOHN, citizen of the United States, residing at Detroit, in the county of lVayne and State of Michigan, have invented certain new and useful Improvements in Music-Leaf Turners, of which the following is a specification.

This invention relates to music and refers particularly to an attachment for pianos, music racks, stands or the like for the purpose of supporting and turning sheets of music.

An object of this invention is to construct a device of this character by means of which the leaves will be rapidly 'turned over and at the same 'time will be held rigidly from falling and maintained in an upright position.

Another object of this invention is to provide a device of this character upon which one or more sheets of music may be positioned and may be operated independently of each other for the purpose of reversing the leaves in either direction.

The invention still further aims the production of a device of this character which is so positioned with respect to the readerl of the music that the same may be operated by the hand of the reader or by means of a treadle connected to an operating lever so as to produce a device which is convenient and one which may be depended upon.

For a full understanding of the invention reference is to be had to the following description and accompanying drawings, in which,

Figure 1 is a front elevation of a complete device. Fig. 2 is an end elevation of the same showing the casing and cover partly in section.. Fig. 3 is a detailed front elevation of the casing having the cover removed therefrom disclosing the means for operating the supporting rods. Fig. f1 is an enlarged detail of a transverse section of the casing and attachments therein, showing a modification of the rods. Fig. 5 is a detail perspective of one of the lower arms for supporting music sheets as secured upon one of the supporting rods, the fragmentary view of the rod disclosed. Fig. 6 is a second modified form of the rods employed.

Corresponding and like parts are referred to in the following description and indicated in all the views of the drawings by the same reference characters.

Referring to the drawings, the numeral designates a casing which is of rectangular Specification of Letters Patent.

Application filed February 16, 1909.

Patented Feb. S, 1910.

serial No. 478,210.

formation and which is provided upon its inner opposite faces on the longitudinal sides thereof with journal bearings 11 and 12 in which are positioned the lower extremities of a plurality of rods 13. The rods 13 are provided upon their lower extremities adjacent the bearings 12 with pinions 14 which are beveled and which are provided with collars 15 through which are disposed setscrews 16 for adjustably positioning the pinions 14 upon the rods. The rods 13 are vertically disposed and are adapted for rotation and are provided with ofl'set portions 17 which extend forwardly and are adapted for admitting of the free operation of the rods 13 when the sheets of music are attached to the same. The extremities of the rods 13 are provided with laterally extended arms 18 which are provided adjacent their outer ends with clamps 19 of any approved formation. As illustrated in the drawings, the clamps each comprise a pair of plates 2O which are provided with inwardly extended lugs 21 through which is passed a pintle 22 for hingedly connecting the plates 2O together. The pintle 22 is provided with a coiled spring 28 which is disposed about the same and which is engaged at its opposite extremities against the inner walls of the plates 2() and at the upper end of the same. The plates 2O are so formed as to adapt themselves at their upper extremities for engagement with the lingers of the operator while the lower extremities are preferablymilled upon their' inner faces for the reception of sheets of music therebetween. The rods 13 are further provided with sleeves 2a which are adjustably secured thereon by means of suitable set-screws 25, the sleeves 24C being provided with outwardly extended arms 26 which are adapted to be adjusted in parallel beneath the arms 18. The arms 2G are adapted to engage the lower edges of the leaves and to support the same in vertical position. The arms 2G are formed preferably of links of wire which are bent upon themselves so as to engage the opposite sides of the sheets of music (see Fig. For the purpose of tensionally retaining the rods 13 in their adjusted positions the same are provided with helical springs 27 which are disposed about the lower ends of the same and impinged between the journal bearings 12 and the upper faces of the beveled pinions 14. The springs thus positioned exert a frictional contact against the beveled pinions 14 and thereby frictionally retain the rods 13 in the desired position.

The means for operating the rods 13 comprises a plurality of beveled gears 28 which are mounted upon stub shafts 29 rotatably disposed through a cover 30 of the casing 10 and which are held in spaced relation to the cover 30 against the beveled pinions 14 by means of collars 31 which are keyed to the stub shafts 29 between the cover 30 and the outer faces of the gears 28. The stub shafts 29 extend outwardly beyond the cover 30 and are provided with cross-arms 3:2 so positioned as to extend in diametrically opposite relation and from which are depended rods 33 and 34.

The casing 10 is provided with rods 35 which are vertically extended from the opposite ends thereof and which are provided with outwardly turned arms 36 upon the upper extremities of the same. The rods 35 are also provided with arms 37 which are adjustably supported adjacent the lower extremities thereof by means of collars 38 and set-screws 39. The rods 35 and the arms 36 and 37 are adapted to be stationarily positioned upon the casing 1() for the purpose of supporting the back of a music book or the like during the operation of the device. The rods 35 are engaged in vertical bores disposed in the upper face of the casing 10 and are held therein by means of set-screws 40. The arms 36 are also provided with suitable clamps 41 for the purpose of engaging the back of the music book or the like.

The rods 33 and 34 are provided with finger disks 43 and 42 respectively, for the engagement of the fingers of the operator, or they may be connected to a treadle or any like arrangement which it is found conveui ient to employ.

The operation of the device is as follows z-The rods 13 are rotated so as to extend the arms 13 and 26 to the right of the operator in order to position the device normally. r1`he sheets of music are attached to the clamps 19 and their lower edges engaged between the loops of the arms 26. lVhen it is desired tov turn the sheet of music over, the operator presses a finger upon the disk 42 which rotates the beveled gear 28 through the medium of the stub shaft 29 and causes the rotation of the beveled pinion 14 which carries a rod 13 therewith. This movement produces the swinging of the arms 1S and 26 about the first rod 13 as an axis and turns the leaf of music over and engages the same against the arms 3G and 37 at the left end of the device. This action is repeated with respect to each of the rods 13 and when it is desired to reverse the sheets, the levers 43 are depressed which reverses the rotations of the gears Q8 and pinions 14 to revolve the rods 13 in an opposite direction. It is readily seen that in this construction the arms 2G and 37 may be vertically adjusted upon the rods 13 and 35 in order to engage sheets of music of various lengths or heights.

The casing 10 is provided with lugs 44 which are projected from the same in any convenient position for the purpose of curing the device upon the frame of a piano or the like. In conjunction with lugs 44 plates 45 are employed which are adapted to be secured to the frame upon which the device is to be carried and which is provided with threaded apertures into which are eugaged the inner extremities of set-screws 46 carried by the lugs 44.

A device of this nature which comprises but few operative parts, the parts being so constructed as to enable the same to be formed from light material, produces a device which is adaptable to uses where weight is considered as a disadvantage, as for instance upon music racks, stands or the like.

In Fig. 4 the end rods 35a and the rotary rods 13a are each terminated a short distance above the casing and are provided with clamping plates A and B which are apertured through their opposite ends to receive the rods 35a and 13a and to support the rod extensions 35b and 13b in offset relation respectively. The plates A and B are retained in adjusted posit-ion by means of set screws C which are mounted in the plates A and B.

Fig. 6 shows a modified form of the detachable connection in which the rods 13 are provided with bushings D which are rigidly carried thereon and which are provided with set screws E to hold the lower ends of the rod extensions F in position.

Having thus described the invention, what is claimed as new is 1. A device as specified comprising a casing, a plurality of rods rotatably disposed in said casing and extended upwardly therefrom, arms laterally extended` in parallel spaced relation from said rods for supporting sheet music, rods vertically and rigidly positioned upon the opposite extremities of said casing, arms outwardly extended from said rigid rods to form a back for the device, pinions carried by said rods in said casing, stub shafts mounted in said casing, gears disposed on said stub shafts and meshed with said pinions and operating levers carried upon the outer extremities of said stub shafts for rotating the same.

2. A device as specified comprising a casing, a plurality of rods journaled in said casing at their lower extremities, laterally extended arms disposed in spaced relation upon said rods, gears mounted in said casing, pinions disposed on said rods and meshed with said gears, helical springs disposed about said rods between said pinions and the inner face of the side of said casing and means for actuating said gears.

3. A device as specified comprisirrg` a casing` a plurality of rods journaled in said easing and extended upwardly therefrom, arms extended laterally in parallel spaced relation from said rods, clamps carried intermediately of the upper of said arms, the lower of said arms adapted to engage about the opposite sides of the lower end of sheets of music, rods rigidly mounted in the opposite extremities of said casing and extended upwardly therefrom, arms extended outiardly from said rigid rods to form a back for the device, pinions disposed upon the lower extremities of said rods within said casing', springs disposed about said rods between said pinions and the upper side of said easing, stub shafts extended transversely through said casing, gears mounted on said stub shafts for engagement with said pinions, cross-arms carried by said stub 20 PAUL KOHN. IL. s]

litnesses GUs'rAv MERTENs, CARL KOEN. 

